I have been using this for several years. All of a sudden I can no longer download my purchsed books to Adobe Digital Editions. It says ther is an activation error. I have tried to deauthorise but it will not accept my email and password to do so! I am very confused!
I have the same problem and am on a loop GETTING NOWHERE. Very unhappy.
I was told that I needed to download an earlier version, which I did and I am getting the same message with library books. The told me to re-register, but I can't. Their needs to be a complaint line for there free products on here.